NCERT Class 11 Chemistry Lab Manual Purification and Criteria of Purity

Read and download NCERT Class 11 Chemistry Lab Manual Purification and Criteria of Purity in NCERT book for Class 11 Chemistry. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Chemistry textbook for Class 11 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 11 Chemistry to understand the answers of the exercise questions given at the end of this chapter

NCERT Book for Class 11 Chemistry Lab Manual Purification And Criteria Of Purity

Class 11 Chemistry students should refer to the following NCERT Book Lab Manual Purification And Criteria Of Purity in Class 11. This NCERT Book for Class 11 Chemistry will be very useful for exams and help you to score good marks

Lab Manual Purification And Criteria Of Purity NCERT Book Class 11

                                                 PURIFICATION AND CRITERIA OF PURITY

 For the identification of a compound, qualitative analysis of pure substance is required. Therefore, first we have to purify the substance and then check its purity. There are many techniques namely, crystallisation, distillation sublimation, chromatography etc. available for purification of a compound. In this unit you will learn about crystallisation as a technique for purification of a compound. The purity of a compound may be checked by determining its melting or boiling point. The technique for determination of melting and boiling points will also be described in this unit. Pure solid and liquid compounds possess sharp melting and boiling points. Therefore, melting and boiling points of a compound can be used as  a criteria of purity.

EXPERIMENT 3.1

 Aim

Purification  of sample of any one of the following Potash alum, Copper sulphate or Benzoic acid by crystallisation.

Theory

Crystallisation is one of the techniques for the purification of an impure compound particularly when the original crude material obtained after a reaction is in a very impure condition. First step of the process involves choosing a single solvent or a mixture of solvents, which dissolves the crude material readily when hot, but only to a small extent when cold. The crude substance is then dissolved in the minimum amount of boiling solvent to obtain a saturated solution. Insoluble impurities are removed by filtering the hot solution. It is then checked for crystallisation point and then cooled slowly when the solute crystallises out leaving the greater part of impurities in the solution. The crop of crystals is collected by filtration and the process is repeated until the crystals of pure substance are obtained. Sometimes during cooling minute quantity of the substance (solid which is being purified) is added to the solution to facilitate the initial crystallisation. This is called seeding. The added tiny crystal acts as a ‘nucleus’ for the growth of new crystals. Growth of crystals depends upon the conditions in which crystallisation is carried out. For obtaining good crystals, rapid cooling should be avoided because it results into small or disfigured crystals. Purity of crystals is often judged from the colour of the crystals. For example, pure crystals of alum, copper sulphate and benzoic acid are white, blue and

Click on the below link to download NCERT Class 11 Chemistry Lab Manual Purification and Criteria of Purity

Chapter 01 Some Basic Concepts of Chemistry
NCERT Class 11 Chemistry Some Basic Concepts Of Chemistry
Chapter 02 Structure of Atom
NCERT Class 11 Chemistry Structure of Atom
Chapter 03 Classification of Elements and Periodicity in Properties
NCERT Class 11 Chemistry Classification of Elements and Periodicity In Properties
Chapter 04 Chemical Bonding and Molecular Structure
NCERT Class 11 Chemistry Chemical Bonding and Molecular Structure
Chapter 05 States of Matter
NCERT Class 11 Chemistry State Of Matter
Chapter 06 Thermodynamics
NCERT Class 11 Chemistry Thermodynamics
Chapter 08 Redox Reactions
NCERT Class 11 Chemistry Redox Reactions
Chapter 10 The s-Block Elements
NCERT Class 11 Chemistry The s Block Elements
Chapter 11 The p-Block Elements
NCERT Class 11 Chemistry The p Block Elements
Chapter 12 Organic Chemistry – Some Basic Principles & Techniques
NCERT Class 11 Chemistry Organic Chemistry Some Basic Priciples and Techniques
Chapter 14 Environmental Chemistry
NCERT Class 11 Chemistry Environmental Chemistry
Part I Answer to Some Selected Problems
NCERT Class 11 Chemistry Answer of Some Selected Problems
Part II Answer to Some Selected Problems
NCERT Class 11 Chemistry Answer to Some Selected Problems

NCERT Book Class 11 Chemistry Lab Manual Purification And Criteria Of Purity

The above NCERT Books for Class 11 Chemistry Lab Manual Purification And Criteria Of Purity have been published by NCERT for latest academic session. The textbook by NCERT for Lab Manual Purification And Criteria Of Purity Chemistry Class 11 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Lab Manual Purification And Criteria Of Purity NCERT etextbooks as the exams for Class 11 Chemistry are always asked as per the syllabus defined in these ebooks. These Class 11 Lab Manual Purification And Criteria Of Purity book for Chemistry also includes collection of question. Along with Chemistry Class 11 NCERT Book in Pdf for Lab Manual Purification And Criteria Of Purity we have provided all NCERT Books in English Medium for Class 11 which will be really helpful for students who have opted for english language as a medium. Class 11 students will need their books in English so we have provided them here for all subjects in Class 11.

Where can I download latest NCERT Book for Class 11 Chemistry Lab Manual Purification And Criteria Of Purity

You can download the NCERT Book for Class 11 Chemistry Lab Manual Purification And Criteria Of Purity for latest session from StudiesToday.com

Can I download the NCERT Books of Class 11 Chemistry Lab Manual Purification And Criteria Of Purity in Pdf

Yes, you can click on the link above and download chapter wise NCERT Books in PDFs for Class 11 for Chemistry Lab Manual Purification And Criteria Of Purity

Are the Class 11 Chemistry Lab Manual Purification And Criteria Of Purity NCERT Book available for the latest session

Yes, the NCERT Book issued for Class 11 Chemistry Lab Manual Purification And Criteria Of Purity have been made available here for latest academic session

How can I download the Class 11 Chemistry Lab Manual Purification And Criteria Of Purity NCERT Book

You can easily access the link above and download the Class 11 NCERT Books Chemistry Lab Manual Purification And Criteria Of Purity for each chapter